中文摘要：

有未知免费表面的复杂渗出物流动域被周界在上海 Laogang 市政的稳固的浪费(MSW ) 垃圾堆形成在在垃圾堆的基础的垃圾堆地点和预制垂直排水管(PVD ) 附近的截止的墙。首先，相等的垂直渗透基于 PVD 和 ther 的排水机制被介绍鼓舞的计算方法被学习到宏观的联盟者在垃圾堆基础的渗出物流动地位上反映 PVD 的影响。与地下水的茶碱过滤上的截止的墙和 PVD 的影响，全部的流入被分类进二部分：通过在垃圾堆外面的截止的墙的侧面的流入，和通过从垃圾堆的基础的 PVD 的向上的渗入。渗出物分析根据 Laogang 垃圾堆的实际情形用有限元素方法被进行，并且侧面的渗入和向上的渗入分别地被计算。结果证明进垃圾堆区域的全部的流入被向上的渗入主要通过截止的墙是显著地有效的解压渗出物压力并且减少流动率的 PVD 和周界供应。

英文摘要：

A complex seepage flow field with unknown free surface was formed in the Shanghai Laogang Municipal Solid Waste （MSW） Landfill by the perimeter cut-off wall around the landfill site and the Prefabricated Vertical Drains （PVD） in the foundation of landfill. First, the equivalent vertical permeability was presented based on the drainage mechanism of PVD and the related calculation method was studied to macroscopically reflect the impact of PVD on the seepage flow status of the landfill foundation. With the influence of the cut-off wall and the PVD on the infiltration of groundwater, the total inflow was classified into two parts： the lateral inflow through the cut-off wall outside the landfill, and the upward infiltration through the PVD from the foundation of the landfill. Seepage analysis was conducted using the finite element method according to the actual scenario of Laogang Landfill, and the lateral infiltration and the upward infiltration were calculated, respectively. The results show that the total inflow into the landfill area was mostly supplied by the upward infiltration through the PVD and the perimeter cut-off wall was significantly effective to depressurize the seepage pressure and to reduce the flow rate.